Revelation 12:8; Neither Was There Place Found Any More in Heaven
Revelation 12:8 And prevailed not; neither was their place found any more in heaven.
All of Satan’s attempts to oppose God throughout history have failed, and he will lose this final angelic battle as well. The devil and his angels are not strong enough to defeat God, Michael, and the holy angels. Satan will suffer such a complete defeat that there will no longer be a place found for him and his demon hosts in heaven. Every inch of heaven, as it were, will be thoroughly scoured and all the rebellious fallen angels permanently cast out. They will no longer have access to God’s presence, and Satan will never again accuse believers before God’s throne. This defeat will also mark the end of Satan’s reign as “the prince of the power of the air” (Eph. 2:2).
Ephesians 2:2 Wherein in time past ye walked according to the course of this world, according to the prince of the power of the air, the spirit that now worketh in the children of disobedience:
But heaven’s cleansing is earth’s pollution, as Satan’s full fury explodes on humanity when he is cast to the earth (cf. 12:12).
Revelation 12:12 Therefore rejoice, yeheavens, and ye that dwell in them. Woe to the inhabiters of the earth and of the sea! for the devil is come down unto you, having great wrath, because he knoweth that he hath but a short time.
At exactly what point in the Tribulation Satan and the demons will be evicted from heaven is not revealed, nor is the duration of their battle with Michael and the holy angels. All that can be said with certainty is that Satan and the demons will be cast out of heaven, possibly at the Rapture, but no later than the midpoint of the Tribulation. Verse 12 says that Satan and his forces have only “a short time” after they leave heaven, supporting the view that they will have only the last three and a half years of the Tribulation to operate, rather than the full seven years. They will not arrive on earth later than that, since they clearly are present during the terrible events of the last three and a half years, the Great Tribulation (cf. Revelation 9:1).
Revelation 9:1 And the fifth angel sounded, and I saw a star fall from heaven unto the earth: and to him was given the key of the bottomless pit.
During that last period, Satan’s full power will be directed at anyone belonging to God, especially Israel.
MacArthur, J. F., Jr. (2000). Revelation 12–22 (p. 18). Chicago: Moody Press.